JJ Stokes was once named Rice's successor as well.
Here is an article I found on why Crabtree is more T.O. than Rice:
"One thing that has bothered me about the Draft analysis of Michael Crabtree has been the comparisons to Jerry Rice. People do so because of Crabtree's perceived lack of speed.
I know one thing for certain though—Michael Crabtree is not the next Jerry Rice. He's the next Terrell Owens. Or at worst, the next Mike Williams.
In other words, I think Crabtree will be productive player, but in listening to his interviews, I can tell that he's not excited about where he's going. Maybe he's upset because he lost money. Maybe it's because he wanted to play for a different team.
He sounded like he needed Zoloft.
One thing I know for sure is, moody players are usually more trouble than they are worth.
I think that's why teams passed on Crabtree. Keep in mind that Seattle, Cleveland, Cincinnati, St. Louis, and Jacksonville all passed on Crabtree too. I think they saw the same things in Crabtree that the Raiders did—a moody and uncooperative player. Rumor has it to that some within the 49ers organization did not want Crabtree either."
The article goes on to talk about the Raiders so he very well could be a jealous Raider homer but I thought it was interesting.